DIY_EFI Digest Tuesday, 11 June 1996 Volume 01 : Number 163 In this issue: Re: How to get more information on a BOSCH Air Flow Meter Re: Welcome aboard See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: Pete Sterrantino Date: Mon, 10 Jun 1996 08:50:56 -0400 (EDT) Subject: Re: How to get more information on a BOSCH Air Flow Meter At 01:31 PM 6/7/96 EDT, you wrote: >I'm looking to hack my Motronics FI system (84 BMW). Is there anyway to >get a equivalent circuit diagram of the Air Flow Meters? > >David Hoerl >dfh@xxx.com > > Sorry for the double-post...I thought I forwarded the message home... Anyway, my Bosch Automotive Electric/Electronic Systems book (available from the SAE) says that it's linear potentiometer arrangement which would assure a linear output voltage with respect to air flow. A diagram further on shows the output of the sensor going into the control unit's A/D port which would further confirm an analog output...I'd get out a digital voltmeter and take a look. Pete S. ------------------------------ From: Seth Allen Date: Mon, 10 Jun 1996 23:41:57 -0700 (PDT) Subject: Re: Welcome aboard On Fri, 7 Jun 1996, Clinton L. Corbin : Backgrind/Gold : Pager 0544 wrote: > Date: Fri, 7 Jun 96 20:00:03 PDT > From: Clinton L. Corbin : Backgrind/Gold : Pager 0544 > To: diy_efi@xxx.edu > Subject: Welcome aboard > > >Sorry for rambling on, but I've just joined this newsletter and I guess > >I had a bit to say. > > > >Thanks for the help in advance > > > >Todd Knighton, Protomotive Engineering > >Email knighton@xxx.net > > Todd, > > Good to have you on the list. I think most everyone would be glad to here > about real world experiences with the various fuel injection systems. For > some strange reason, most of the people on this list have a hard time getting > dyno time with a good A/F meter. I wonder why..... > > Clint > ccorbin@xxx.com > I seem to have the opposite problem--- I have access to a superflow 901 (901t?) dynamometer withairflow indicators, and a 4 gas analyzer. My problem is coming up with the funding for an independent study. If someone has the patience, money and trust, I could submit an Independent study proposal for most any IC engine development work. The dyno will take up to 1000 bhp continuous. It doesnt like much less than 60 bhp, it is too far towards the low end of the scale. I go to school at western washington university, bellingham, WA. If someone has a reasonable project, I might submit a proposal for next academic year. Personally, I am interested in racing applications, but that is not the only sort of project I would consider. The dyno is set up to bolt up to small block chevy, small block ford, and I think chrysler. I helped build an adapter to run our Formula SAE Honda CBR 600(cc) F2 through it. 83 horsepower with an IHI turbo and a 20 mm (~.789 inch) diameter restrictor. If anyone has a 3 or 4 rotor wankel, I would love to tackle that, and we already have adapter plates for the 13b and 12a. Just throwing out a line. Seth Allen ------------------------------ End of DIY_EFI Digest V1 #163 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. A non-digest (direct mail) version of this list is also available; to subscribe to that instead, replace "diy_efi-digest" in the command above with "diy_efi".